158 lines
3.9 KiB
HTML
158 lines
3.9 KiB
HTML
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<HTML><HEAD><TITLE>Man page of GPG-PRESET-PASSPHRASE</TITLE>
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</HEAD><BODY>
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<H1>GPG-PRESET-PASSPHRASE</H1>
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Section: GNU Privacy Guard 2.2 (1)<BR>Updated: 2019-11-23<BR><A HREF="#index">Index</A>
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<A HREF="/cgi-bin/man/man2html">Return to Main Contents</A><HR>
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<A NAME="lbAB"> </A>
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<H2>NAME</H2>
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<B>gpg-preset-passphrase</B>
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- Put a passphrase into gpg-agent's cache
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<A NAME="lbAC"> </A>
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<H2>SYNOPSIS</H2>
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<B>gpg-preset-passphrase</B>
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[<I>options</I>]
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[<I>command</I>]
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<I>cache-id</I>
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<P>
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<A NAME="lbAD"> </A>
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<H2>DESCRIPTION</H2>
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The <B>gpg-preset-passphrase</B> is a utility to seed the internal
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cache of a running <B>gpg-agent</B> with passphrases. It is mainly
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useful for unattended machines, where the usual <B>pinentry</B> tool
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may not be used and the passphrases for the to be used keys are given at
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machine startup.
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<P>
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This program works with GnuPG 2 and later. GnuPG 1.x is not supported.
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<P>
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Passphrases set with this utility don't expire unless the
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<B>--forget</B> option is used to explicitly clear them from the
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cache --- or <B>gpg-agent</B> is either restarted or reloaded (by
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sending a SIGHUP to it). Note that the maximum cache time as set with
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<B>--max-cache-ttl</B> is still honored. It is necessary to allow
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this passphrase presetting by starting <B>gpg-agent</B> with the
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<B>--allow-preset-passphrase</B>.
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<P>
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<P>
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<P>
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<P>
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<B>gpg-preset-passphrase</B> is invoked this way:
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<P>
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<DL COMPACT><DT id="1"><DD>
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<PRE>
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gpg-preset-passphrase [options] [command] <I>cacheid</I>
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</PRE>
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</DL>
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<P>
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<I>cacheid</I> is either a 40 character keygrip of hexadecimal
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characters identifying the key for which the passphrase should be set
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or cleared. The keygrip is listed along with the key when running the
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command: <B>gpgsm --with-keygrip --list-secret-keys</B>.
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Alternatively an arbitrary string may be used to identify a
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passphrase; it is suggested that such a string is prefixed with the
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name of the application (e.g <B>foo:12346</B>). Scripts should always
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use the option <B>--with-colons</B>, which provides the keygrip in a
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"grp" line (cf. '<I>doc/DETAILS</I>')/
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<P>
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<P>
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One of the following command options must be given:
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<P>
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<DL COMPACT>
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<DT id="2"><B>--preset</B>
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<DD>
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Preset a passphrase. This is what you usually will
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use. <B>gpg-preset-passphrase</B> will then read the passphrase from
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<B>stdin</B>.
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<P>
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<DT id="3"><B>--forget</B>
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<DD>
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Flush the passphrase for the given cache ID from the cache.
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<P>
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</DL>
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<P>
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<P>
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<P>
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The following additional options may be used:
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<P>
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<DL COMPACT>
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<DT id="4"><B>-v</B>
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<DD>
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<B>--verbose</B>
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Output additional information while running.
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<P>
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<DT id="5"><B>-P </B><I>string</I>
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<DD>
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<B>--passphrase </B><I>string</I>
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Instead of reading the passphrase from <B>stdin</B>, use the supplied
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<I>string</I> as passphrase. Note that this makes the passphrase visible
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for other users.
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</DL>
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<P>
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<P>
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<A NAME="lbAE"> </A>
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<H2>SEE ALSO</H2>
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<B><A HREF="/cgi-bin/man/man2html?1+gpg">gpg</A></B>(1),
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<B><A HREF="/cgi-bin/man/man2html?1+gpgsm">gpgsm</A></B>(1),
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<B><A HREF="/cgi-bin/man/man2html?1+gpg-agent">gpg-agent</A></B>(1),
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<B><A HREF="/cgi-bin/man/man2html?1+scdaemon">scdaemon</A></B>(1)
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<P>
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The full documentation for this tool is maintained as a Texinfo manual.
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If GnuPG and the info program are properly installed at your site, the
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command
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<P>
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<DL COMPACT><DT id="6"><DD>
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<PRE>
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info gnupg
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</PRE>
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</DL>
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<P>
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should give you access to the complete manual including a menu structure
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and an index.
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<P>
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<P>
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<P>
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<P>
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<P>
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<P>
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<HR>
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<A NAME="index"> </A><H2>Index</H2>
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<DL>
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<DT id="7"><A HREF="#lbAB">NAME</A><DD>
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<DT id="8"><A HREF="#lbAC">SYNOPSIS</A><DD>
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<DT id="9"><A HREF="#lbAD">DESCRIPTION</A><DD>
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<DT id="10"><A HREF="#lbAE">SEE ALSO</A><DD>
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</DL>
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<HR>
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This document was created by
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<A HREF="/cgi-bin/man/man2html">man2html</A>,
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using the manual pages.<BR>
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Time: 00:05:15 GMT, March 31, 2021
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</BODY>
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</HTML>
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